prop pitch follow up

As a follow up to an earlier message, I did contact PYI, Inc. to try to find out what the pitch should be on my Maxprop, with the new electric engine thrown in. They came back with my original measurements: 13 x 12, which were causing the cavitation and vibration. When I mentioned this, they said I'd have to experiment, which I had been doing. Ah well! Anne Racel 4 Degrees http://boatjournal.stuffandjunk.net

I realize that I have asked before about engine alignment but I thought I would ask a follow up question. Did you do the alignment with the boat in the water? Did you check it again after running the engine for some time? I understand that my engine is different from yours but the manual for a Gray Marine engine has the procedure for aligning an engine on page 16 and a number of prop size/pitch recommendations for various engines and boats on page 74 (last page). Perhaps you can fine one that approximates your HP on the list. The manual takes several seconds to load but in case you find it useful it is HERE <http://l-36.com/gray_marine.php> Allen On Sat, Dec 31, 2011 at 3:58 AM, <am… [at] stuffandjunk.net> wrote: > ** > > > As a follow up to an earlier message, I did contact PYI, Inc. to try > to find out what the pitch should be on my Maxprop, with the new > electric engine thrown in. They came back with my original > measurements: 13 x 12, which were causing the cavitation and > vibration. When I mentioned this, they said I'd have to experiment, > which I had been doing. > > Ah well! > > Anne Racel > 4 Degrees > http://boatjournal.stuffandjunk.net > > >